function getFirstLastDay (time) {
let date = new Date(time)
let Time = date.getTime()
let day = date.getDay()
let oneDayTime =24*60*60*1000
//周一
let MondayTime = Time - (day - 1) * oneDayTime
//周日
let SundayTime = Time + (7 - day) * oneDayTime
let monday =new Date(MondayTime)
let sunday = new Date(SundayTime)
return {
monday, sunday }
}
一、获取时间所在周的周一、周五
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